Using the quadratic formula 3x2 - 13x + 4 = 0

In this case, a=3, b = - 13, and c=4. Use (-b + sqrt b^2 - 4ac) / 2a which will come out to 4. Then use (-b - sqrt b^2 - 4ac) / 2a which will come out to. 33333.

So your two answers here are x=4 and x=0.3333